424277857644 has 12 divisors (see below), whose sum is σ = 989981667864. Its totient is φ = 141425952544.

The previous prime is 424277857609. The next prime is 424277857649. The reversal of 424277857644 is 446758772424.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (424277857649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17678244057 + ... + 17678244080.

It is an arithmetic number, because the mean of its divisors is an integer number (82498472322).

Almost surely, 2^424277857644 is an apocalyptic number.

It is an amenable number.

424277857644 is an abundant number, since it is smaller than the sum of its proper divisors (565703810220).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

424277857644 is a wasteful number, since it uses less digits than its factorization.

424277857644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35356488144 (or 35356488142 counting only the distinct ones).

The product of its digits is 84295680, while the sum is 60.

The spelling of 424277857644 in words is "four hundred twenty-four billion, two hundred seventy-seven million, eight hundred fifty-seven thousand, six hundred forty-four".